Screen utilities are used to display formatted menus.
The screen utility consists of a series of BASIC subroutines to handle formatted menus. All data is passed between the subroutines and the main program through a common defined in include dm,bp,includes, screen.inc. The routines are described in more detail in the appropriate section.
Displays a screen and waits for a menu selection. |
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Erases a screen section. |
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Initializes the common. This routine must be called before any other routine is called. After calling it, the main program can modify some of the common variables. |
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Displays an input screen and waits for user data to be input. |